When virtual member manager is used in a shared environment, where multiple applications are sharing the same virtual member manager instance, administering configuration becomes a critical task.
When one application has configured virtual member manager and then another application wants to share the same instance of virtual member manager, there needs to be some constraints and limitations to make sure that both applications can share virtual member manager without conflict.
Not-shared or shared but not critical parameters can be modified by applications or their administrators by calling the virtual member manager configuration API without any intervention by the virtual member manager administrator. When a critical shared configuration parameter is modified, the virtual member manager administrator makes the modifications. The virtual member manager administrator is responsible for determining whether a shared critical configuration parameter can be modified.